The smoking ban is to blame for high levels of domestic violence in some parts of Preston, according to the city's top policeman.
Figures for the last quarter show domestic violence accounts for as much as 40% of violent crime in some suburban areas in the east of Preston including places such as Ribbleton and St Matthews.
The overall average in Preston is 23%.
And one t
heory is it could be down to a change in people's social drinking habits following last year's smoking ban.
Preston's Chief Supt Peter White said: "We are having reported to us by the licensing trade that the smoking ban is really affecting business in pubs and we know from our patrols in the city centre the pubs don't seem to be as busy.
"We know pubs are closing. A lot of the licensees are quoting the smoking ban and price of alcohol in pubs.
"We also know, relatively speaking, alcohol in supermarkets is very cheap and we also know statistics are showing we have not reduced domestic violence as quickly as the ban has reduced crime in the city centre.
"I don't particularly think it's a leap of faith to suggest one of the reasons crime is going down in the city centre and not going down elsewhere might be people's social drinking habits are changing."
Chief Supt White added: "It would seem sensible that some people will stay at home and drink more because it's cheaper to do it that way.
"That may lead to dispute between partners and therefore domestic violence."
Because domestic violence is often a hidden crime that takes place in the home, police say the increased reporting of incidents could also be seen as positive as the increase may just be that more victims are seeking help.
Chief Insp White said a lot of work was being done to address domestic violence and urged people to come forward and report it.
Director of Preston Women's Refuge, Valerie Wise, said: "It's horrendous that 40% of violent crime cases in some parts of Preston are related to domestic violence.
"I think sometimes people use drink as an excuse and as far as I'm concerned, there's no excuse.
"If people can't hold their alcohol they shouldn't drink. They know if they have got a problem from that perspective.
"Domestic violence is a deliberate act and so can't be excused by having a drop too much to drink."
In February the Evening Post revealed another leading policeman had blamed the ban for pushing violent crime onto the city's streets.
Insp Steve Evans said a sudden increase in smokers lighting up outside pubs and restaurants since the ban had "provoked" trouble in the city centre.
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